Method and system for metadata analysis and collection with privacy
First Claim
1. A method comprising:
- generating and transmitting authorization keys by a trusted third party (TTP) system to a government agency (GA) system and a communication service provider (CSP) system;
receiving index records from the CSP system,wherein the index records reference records of subscribers of the CSP system;
ingesting and storing the index records received from the CSP system;
receiving a target index request from the GA system;
sending a metadata record request by the TTP system to the CSP system based on the target index request; and
receiving metadata records at the TTP system from the CSP system and sending the metadata records to the GA system,wherein the metadata records are encrypted with encryption keys shared between the GA system and the CSP system, but not the TTP system such that the TTP system cannot decrypt the metadata records.
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Abstract
A system and method for metadata analysis and collection with privacy is disclosed. According to one embodiment, a trusted third party (TTP) system generates and transmits authorization keys to a government agency (GA) system and a communication service provider (CSP) system. The TTP system receives index records referencing records of subscribers from the CSP system and ingests the index records received from the CSP system. The TTP system receives a target index request from the GA system and sends a metadata record request to the CSP system based on the target index request. The CSP system sends metadata records to the TTP system, and the TTP system delivers the metadata records to the GA system. The metadata records are encrypted with encryption keys shared between the GA system and the CSP system such that the TTP system cannot decrypt the metadata records.
196 Citations
22 Claims
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1. A method comprising:
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generating and transmitting authorization keys by a trusted third party (TTP) system to a government agency (GA) system and a communication service provider (CSP) system; receiving index records from the CSP system, wherein the index records reference records of subscribers of the CSP system; ingesting and storing the index records received from the CSP system; receiving a target index request from the GA system; sending a metadata record request by the TTP system to the CSP system based on the target index request; and receiving metadata records at the TTP system from the CSP system and sending the metadata records to the GA system, wherein the metadata records are encrypted with encryption keys shared between the GA system and the CSP system, but not the TTP system such that the TTP system cannot decrypt the metadata records. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method comprising:
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receiving authorization keys from a trusted third party (TTP) system, wherein the authorization keys are shared with a CSP system; generating queries for a target ID; transforming the target ID to a target index; sending a target index request to a TTP system, wherein the TTP system sends a metadata record request to the CSP system, and wherein the CSP system delivers to the TTP system encrypted metadata records; receiving the encrypted metadata records from the TTP system; and decrypting the encrypted metadata records using an encryption key shared between a government agency (GA) system and the CSP system, but not the TTP system, wherein the TTP system keeps track of a volume of the encrypted metadata records, and is incapable of decrypting the encrypted metadata records. - View Dependent Claims (17, 18, 19)
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20. A method comprising:
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receiving authorization keys from a trusted third party (TTP) system, wherein the authorization keys are shared with a government agency (GA) system; sending index records to the TTP system, wherein the index records reference records of subscribers; receiving a metadata record request from the TTP system, wherein the metadata record request includes a metadata record ID; retrieving metadata records that are associated with the metadata record ID from a metadata store; generating encrypted metadata records by encrypting the metadata records using an encryption key shared between the GA system and a communication service provider (CSP) system, but not the TTP system such that the TTP system cannot decrypt the metadata records; and sending the encrypted metadata records to the TTP system. - View Dependent Claims (21, 22)
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Specification